Rangers in North America served in the 17th and 18th-century wars between colonists and Native American tribes. The British regulars were not accustomed to frontier warfare and so Ranger companies were developed. Rangers were full-time soldiers employed by colonial governments to patrol between fixed frontier fortifications in reconnaissance, providing early warning of raids. In offensive operations, they were scouts and guides, locating villages and other targets for task forces drawn from the militia or other colonial troops.